I've had this problem probably for at least a year, at first I thought it was mineral deposits or something but I believe it is shell fungus. One of my turtles sheds and the under scutes come out white and not green at all. I have not seen my other turtle shed at all since I got him and the white colored scutes have pretty much stayed there for a year.
I started applying this cream to his shell after checking out other posts, but after about a week I saw no improvement so I stopped. Is this the right cream to use?
http://www.flickr.com/photos/83238030@N02/7625929598/
Here are some pictures of his shell
http://www.flickr.com/photos/83238030@N02/7625938298/
http://www.flickr.com/photos/83238030@N02/7625939938/
http://www.flickr.com/photos/83238030@N02/7625941550/

